Title
Scenario 16A Water Transmission Main Rehabilitation Construction Administration and Inspection Services Amendment 2 - WS85500423 (Ordinance S-44558)
Description
Request to authorize the City Manager, or his designee, to execute Amendment 2 to Contract 140323 with Wilson Engineers, LLC to provide additional Construction Administration and Inspection (CA&I) Services for the Scenario 16A Water Transmission Main Rehabilitation project. Further request authorization for the City Controller to disburse all funds related to this item. The fee for additional services will not exceed $444,473.04.
Report
Summary
This project is in response to the Large Transmission Main Assessment Program, which determined the need to rehabilitate a portion of the City's 60-inch water transmission main. This amendment will allow the City to expand the rehabilitation project to include the final portion of the project identified during the transmission main assessment project. The additional portion of transmission main requiring rehabilitation is approximately 5,420 linear feet aligned along 36th Street between Elwood Street and Roeser Road.
Wilson Engineers, LLC's CA&I Services include, but are not limited to: reviewing shop drawings and test results; certifying contractor's progress payments; coordinating surveys; reviewing manufacturer operation and maintenance manuals; inspecting and reviewing on-site work and special welds; and commissioning and updating the asset management system.
Procurement Results
Wilson Engineers, LLC was selected for this project using a qualifications-based selection process according to section 34-603 of the Arizona Revised Statutes (A.R.S.). Scoring and selection were made in conjunction with the Design Services section.
Contract Term
The term of the contract amendment will be approximately 22 months. Contract work scope identified and incorporated into the contract prior to the end of the contract may be agreed to by the parties, and work may extend past the termination for work in progress. No additional contract work scope changes may be executed after the end of the contract term.
Financial Impact
The initial contract for CA&I Services was executed for a fee not-to-exceed $602,965.66, and Amendment 1 for additional CA&I Services increased the contract value by $290,972.65, for a total contract value of $893,938.31, including all subconsultants and reimbursable costs. Amendment 2 is for additional CA&I Services and would increase the contract value by an additional $444,473.04, for a new total contract value of $1,338,411.35, including all subconsultant and reimbursable costs.
Funding for this amendment is available in the Water Services Department's Capital Improvement Program budget. Contract payments may be made up to contract limits for all rendered contract services, which may extend past the contract termination.
Concurrence/Previous Council Action
The City Council approved:
- Design Services Contract 138407 (Ordinance S-40909) on May 28, 2014;
- CA&I Services Contract 140323 (Ordinance S-41563) on March 25, 2015; and
- CA&I Services Contract 140323 Amendment 1 (Ordinance S-43149) for additional CA&I Services on Jan. 11, 2017.
Location
The project is located along 36th Street between Elwood Street and Roeser Road.
Council District: 8
Department
Responsible Department
This item is submitted by Deputy City Managers Karen Peters and Mario Paniagua, the Water Services Department, and the City Engineer.